We've been having the same thing with our 10month old. It started off a week ago with a few restless nights, resolved by hugging or some milk. Last night my partner was up for 2 hours with a frantic, flailing, though sleeping little boy and was so distressed he almost resorted to A&E. I did some googling today and have convinced myself it's night terrors. We already had the ears checked out when he started last week. He has had a bit of a cold though which can make things worse apparently. We have a few things to try tonight the most promising seems to be waking him gently just after an hour or so of sleep, this is meant to help ease the transition to deep sleep. Good luck, i'll let you know if we have any luck too!